Segfault and Warning help

Hey guys,

No matter what I do, I can't get this code to stop segfaulting, and as you can see by the debugging printf's, it does so at the assignment of `in' .. there's another warning on compilation:

Code:

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tmp.c:25: warning: assignment makes pointer from integer without a cast

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.. this quick code was written to re-create the segfault (the program I'm writing is quite long, so I decided instead of pasting all of it, or a snipped portion of it, i'd write a quick example to show you what happens), so you could all see when in the execution the segfault occurs, and hopefully offer up some suggestions as you how I could fix this =\ .. anyway, any ideas would be greatly appreciated! Thanks =]

Here's the code:

Code:

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#include <stdio.h>
#include <netdb.h>
#include <netinet/in.h>

int resolve(char *, struct hostent *, struct in_addr **);

int main(int argc, char *argv[])
{
    struct hostent *hent;
    struct in_addr **in;

    printf("DEBUG: Defined structures.\n");
    in = (struct in_addr **)hent->h_addr_list;
    printf("DEBUG: Passed `in' initialization.\n");
   
    resolve(argv[1], hent, in);
   
return 0;
}
int resolve(char *host, struct hostent *hent, struct in_addr **in)
{
char *addr;

    addr = inet_ntoa(**in);
   
    if((hent = gethostbyname(host)) == NULL) {
        fprintf(stderr, "Error: gethostbyname() failed\n");
        return -1;
    }
   
    printf("%s\t\t%s\n", host, addr[0]);
   
return 0;
}

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Do you want us to guess which is line 25?

> in = (struct in_addr **)hent->h_addr_list;
Lemme guess, where is hent pointing?

You have
struct hostent *hent;

Then a printf

Then BOOM!